.posi{
    margin:44px 0 49px;
}
.nb{
    width:100%;
    height:830px;
}
.nb .nb-l{
    float:left;
    width:600px;
}
.nb .nb-l img{
    float: left;
    margin-bottom: 30px;
}
.nb .nb-l .mr0{
    margin-bottom: 0;
}
.nb .nav{
    float: right;
}
.nb .nav .nav-item{
    width:490px;
    height:77px;
    margin-bottom: 69px;
}
.nb .nav .nav-item h3{
    display: inline-block;
    font-size:18px;
    line-height: 18px;
    color:#6b6b6b;
    font-weight: normal;
    margin-bottom: 19px;
}
.nb .nav .nav-item span{
    float: right;
    font-size:18px;
    line-height:15px;
    color:#6b6b6b;
}
.nb .nav .nav-item p{
    font-size: 14px;
    line-height: 20px;
    color: #989898;
}
